An electronic component includes a main body section having a plurality of surfaces and a terminal portion that is disposed in the main body section and that is fitted to a terminal fitting. A housing member includes a first housing chamber that guides and accommodates the main body section and a second housing chamber that accommodates and holds the terminal fitting. The terminal portion includes a base end and a fitting portion that extends from a protruding tip of the base end and that is fitted to the terminal fitting. The fitting portion extends from the protruding tip of the base end, along a side surface of the main body section with a gap from the side surface, without causing an extending tip to protrude beyond the deep surface.